Run details:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:85.0) Gecko/20100101 Firefox/85.0
Firefox 85
Ubuntu
Desktop
3 years ago
Test name Executions per second
Array.prototype.concat 5467983.0 Ops/sec
spread operator 4365631.5 Ops/sec
Array.prototype.flat 6215937.0 Ops/sec
Tests:
  • Array.prototype.concat

  • spread operator

  • Array.prototype.flat